Bonanza chronicled the weekly adventures of the Cartwright family, headed by wise widowed patriarch Ben Cartwright (played by Lorne Greene). He had three biological sons, each by a different wife: the oldest was the intelligent and moody Adam Cartwright (Pernell Roberts); the second was the fun and lovable Eric, better known to viewers by his middle name: "Hoss" (Dan Blocker); and the youngest was the hotheaded and impetuous Joseph or "Little Joe" (Michael Landon). The family's cook was the Chinese immigrant Hop Sing (Victor Sen Yung). The family lived on a thousand-square-mile ranch called "The Ponderosa", on the shore of Lake Tahoe in Nevada; the name refers to the Ponderosa Pine, common in the West.

THIS EPISODE:
Enter Mark Twain
October 10, 1959
Samuel Clemens arrives in Virginia City to write for the Territorial Enterprise at the same time a crooked politician tries to lay claim on the Ponderosa.